Sharp Atomic Clock Spc373 User Manual May 2026
Sharp Electronics provides a 1-year limited warranty against manufacturing defects from the date of purchase. Does not cover battery leakage, physical damage, or signal interference beyond the clock’s control.
For support:
Before contacting support: Note your clock’s 4-digit revision code (printed inside battery cover) and the color of the LED flash (if any) during battery insertion.
Thank you for choosing Sharp precision. With proper battery care and placement, your SPC373 will provide a lifetime of effortless, accurate time. sharp atomic clock spc373 user manual
Note: Sharp Electronics produces various clock models. While this guide is specifically tailored for the SPC373 (often sold as a wall clock or large display desk clock with temperature/humidity), the instructions are based on common Atomic Clock protocols. Always keep your original product sheet for specific warranty information.
Solution: You are in the wrong time zone. Press and hold SET until you reach the "ZONE" setting. Change from "P" to "E" if you live in New York.
Q: Will this clock work in Europe or Asia? A: No. The SPC373 only receives the 60 kHz WWVB signal from the US. It will function as a normal quartz clock but never sync. Sharp Electronics provides a 1-year limited warranty against
Q: How long do batteries last? A: With fresh alkaline batteries, expect 12-18 months. The atomic receiver draws most power during the 2 AM sync attempt.
Q: Why does my clock say "DST" but it is wrong? A: The US changed DST laws in 2007. If your SPC373 is a very early model, it may follow the old schedule. Check Sharp’s website for a firmware update (rare) or set DST to OFF and adjust manually twice a year.
Q: Can I wall mount it? A: Yes. There is a keyhole slot on the back. Ensure the wall is sturdy. Do not hang on a metal nail near wiring. Thank you for choosing Sharp precision
The SPC373 listens for the WWVB signal from Colorado. This signal is extremely low frequency (60 kHz) and travels best at night.
Sharp Electronics typically offers a 1-year limited warranty from the date of purchase against manufacturing defects.
What the warranty covers:
What is not covered:
To obtain service:
